Don&8217;t worry about counting sheep when you have a Twin Size Lowery Foam Firm Mattress. With all of the sleep technologies incorporated into this mattress, you&8217;ll never want to go back to what you to sleep on. Feel the difference with TrueSense motion-isolation as it minimizes movement impact while an Ultimate Edge Foam Encasement reduces edge &8220;roll-off&8221; so you can enjoy the entire surface area of the bed.